The three resonantly enhanced Raman vibrations in trans-(CH)x and -(CD)x are described in terms of amplitude modes associated with the Peierls gap. The dispersion in the Raman-line profiles is explained by inhomogeneity. A narrow distribution of the effective electron-phonon coupling constant is required to account for the observed spectra in detail. The resonant Raman vibrations and the ir-active modes induced by doping or photogeneration are all described by the same form of dressed phonon propagator.
|Number of pages||4|
|Journal||Physical Review Letters|
|State||Published - 1 Jan 1983|
ASJC Scopus subject areas
- Physics and Astronomy (all)